Whoever designed the logo obviously didn't have a clue what amber looks like.
That's because it's a diamond, not amber. The airline was originally going to be called Diamond Airways but British Midland raised a legal objection to it shortly before launch due to infringement of its Diamond Service trademark at the time. [British Midland was also running four 737s for Owners Abroad on dedicated charter contracts at the time and there were strong rumblings that it was going to put the four aircraft under a different title - Diamond Line - to avoid confusion between 737s with full Y seating capacity and pay drinks versus those running the scheduled services with greater legroom, free booze etc.]
Anyway, Diamond Airways changed its name about a month before starting operations and for its short life, became Amberair. I seem to recall that it did indeed run one summer season from Manchester and Cardiff (1988?) before merging with Paramount, which then flew four MD83s, one 737-300 and two 737-200s including some flying from Berlin and the 737-300 based at Newcastle for its last year in business. Ironically, Paramount's main customer was Intasun which ended up putting money into the airline (despite owning Air Europe) to keep it going after the Chairman ran off with the contents of the bank account mid-way through the summer.